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How to check if my string is equal to null?
... I agree on the readability. It depends whether we are using Java 5 vs Java 6 since isEmpty() is only in Java 6.
– CoolBeans
Apr 8 '10 at 17:44
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When would you use the Builder Pattern? [closed]
...ow are some reasons arguing for the use of the pattern and example code in Java, but it is an implementation of the Builder Pattern covered by the Gang of Four in Design Patterns. The reasons you would use it in Java are also applicable to other programming languages as well.
As Joshua Bloch states...
Why should a Java class implement comparable?
Why is Java Comparable used? Why would someone implement Comparable in a class? What is a real life example where you need to implement comparable?
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Getting the IP address of the current machine using Java
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import java.net.DatagramSocket;
import java.net.InetAddress;
try(final DatagramSocket socket = new DatagramSocket()){
socket.connect(InetAddress.getByName("8.8.8.8"), 10002);
ip = socket.getLocalAddress().getHostAddress();
}
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Difference between String#equals and String#contentEquals methods
... So, is it like the operators == (contentEquals) and === (equals) in javascript?
– anestv
Dec 23 '13 at 19:04
2
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Android custom dropdown/popup menu
... with Kotlin refer my answer here.
To create a popup menu in android with Java:
Create a layout file activity_main.xml under res/layout directory which contains only one button.
Filename: activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:...
Are “while(true)” loops so bad? [closed]
I've been programming in Java for several years now, but I just recently returned to school to get a formal degree. I was quite surprised to learn that, on my last assignment, I lost points for using a loop like the one below.
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What's the difference between Thread start() and Runnable run()
...Thread#start() ,nothing really relative to os thread happens? It is only a java object.
– Jaskey
Dec 6 '14 at 9:38
4
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Apache POI Excel - how to configure columns to be expanded?
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Warning about autoSizeColumn, this requires java Font be available. This is not part of the headless java jre used on servers and will throw a NullPointerException.
– Stephen Dillon
Oct 2 '17 at 20:28
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How to convert an iterator to a stream?
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Javadoc: static.javadoc.io/com.google.guava/guava/21.0/com/google/common/…
– Henrik Aasted Sørensen
Aug 11 '17 at 6:22
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